79997351 has 6 divisors (see below), whose sum is σ = 93058200. Its totient is φ = 68569116.

The previous prime is 79997347. The next prime is 79997369. The reversal of 79997351 is 15379997.

It is a happy number.

It is not a de Polignac number, because 79997351 - 2² = 79997347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79997351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79997321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 816251 + ... + 816348.

It is an arithmetic number, because the mean of its divisors is an integer number (15509700).

Almost surely, 2^79997351 is an apocalyptic number.

79997351 is a deficient number, since it is larger than the sum of its proper divisors (13060849).

79997351 is a wasteful number, since it uses less digits than its factorization.

79997351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632613 (or 1632606 counting only the distinct ones).

The product of its digits is 535815, while the sum is 50.

The square root of 79997351 is about 8944.1238251715. The cubic root of 79997351 is about 430.8821820393.

The spelling of 79997351 in words is "seventy-nine million, nine hundred ninety-seven thousand, three hundred fifty-one".